When using the muffle furnace, it needs to be operated by professionals, and it is strictly forbidden for non-professionals to use it privately.
When the muffle furnace is heated, the furnace jacket will also become hot, so keep the furnace away from flammable materials and keep the outside of the furnace easy to dissipate heat.
The furnace temperature should not exceed the maximum temperature of the muffle furnace when in use, so as to avoid burning the electric heating element or danger.
In the ashing test, the sample needs to be fully carbonized on the electric furnace before being put into the ashing furnace to prevent carbon accumulation and damage to the heating element.
When using a muffle furnace, it is necessary to keep the furnace clean and remove impurities such as oxides in time.
After the heating is completed, the power supply should be cut off to cool down naturally, so as to avoid opening the furnace door and causing the furnace to be suddenly cold and broken, if it needs to be opened urgently, you can open a small crack first, and then open the furnace door when the temperature drops below 200 °C, and pay attention to safety when taking out the sample, beware of scalding.